Three-dimensional shape detection by means of camera images

Details Three-dimensional shape detection by means of camera images Three-dimensional shape detection by means of camera images

2005-09-20

2005-09-20

Chang, Jon (Department: 2623)

Image analysis

Applications

Biomedical applications

C382S154000, C382S199000, C382S203000, C606S130000, C345S419000, C600S415000

Reexamination Certificate

active

06947582

ABSTRACT:
A method of detecting the shape of an object comprises the following steps: a) producing a camera image of the object; b) mapping an outline of the object, which appears sharp in the camera image, in a first plane by means of an analyzer connected to the camera; c) altering the focusing distance of the camera; d) mapping a sharp outline of the object in a second plane by means of the analyzer; e) repeating steps b) to d) until a sufficient number of outlines has been mapped so that the three-dimensional shape of the object can be established. Also disclosed is an apparatus for implementing the method.

REFERENCES:
patent: 5151609 (1992-09-01), Nakagawa et al.
patent: 5305092 (1994-04-01), Mimura et al.
patent: 5381236 (1995-01-01), Morgan
patent: 6006126 (1999-12-01), Cosman
patent: 6088099 (2000-07-01), Cabib et al.
“Shape from Focus: An Effective Approach for Rough Surfaces” by Nayar et al. Robotics and Automation, 1990. Proceedings., 1990 IEEE International Conference on , May 13-18, 1990. pp.: 218-225 vol. 2.

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